US1511825A - Dishwasher - Google Patents

Description

Um. M, 1924. 195mm W. G. BURNS DISHWASHER Filed Aug. 4, 1919' 4Sheets-Sheet 1 )INVENTOR W. G. BURNS DISHWASHER @w. 14,1924. 151mm Filed Aug. 4, 1919 4 Shets-Sheet 2 INVENTOR .w. G. BURNS DISHWASHER Filed Aug. 4, 1919 4 Sheets-Sheet 5 LILZB W. G. BURNS DISHWASHER ct M, 1924.

INVENTOR WALTER Gt. BUBN3, 013 FORT WAYNE, INDIANA. I

DISHWASHW.

W Application filed. August 4, 1919, Serial Ito. 315,119.

To all whom it may concern:

Be it known that 1, WALTER G. Bp Ns, a citizen of the United States of America, and

residentof Fort Wayne, in the county of,

Allen and State of Indiana, have invented certain new and useful Improvements in Dishwashers, of which the following is a specification.

This invention relates to improvements in dish washers and the objects thereof are:

First, to provide a machine by means of which dishes, culinary and other similar articles may be cleansed and also dried without danger of breakage, and which may be easily operated and which requires no handling of the articles during the washing and drying operations; and, second, to provide in a washing and drying machine of its class an agitator so constructed and op erated in a manner which will maintain,

within the housing containing the articles,

an exceedingly rapid air circulation and which will alsocause washing liquid con tained in the lower part of the housing to passin a fine spray into the circulating fair to be carried thereby amongst the articles to be washed.

.In some former devices agitators have been arranged within a housing which throw quantities of washing liquid bodily over the dishes from which the liquid passes by the force of gravity to the lower part of the housing containing the agitator, the action of the a itator and the consequent movement of llquid over the dishes being necessarily gentle because of liability of breaking the dishes. The intent in the present invention is to cause a rapid movement,

amongst the articles to be washed, of air .charged w1th washing liquid in a fine spray so that even fragile articles such as dishes and light glassware may be subjected to forceful application of the cleansing agent without danger of breakage.

Another object is to so construct chine that the housing when open will aflord ready accessibility to its washing chamber for conveniencein placing and removing the articles to be washed therein and also to so construct and arrange the operatin parts of the machine and their controlling members as to aflord convenience and simplicity in operation. And a further object is to provide in connection with the housing an expedient for efiecting the rethe maturn thereinto of any liquid that may leak from its closure member.

The objects of the improvements are accomplished by the construction illustrated in the accompanying drawings in which Fig. l is a perspective view 'of the machine in open posltion withthe dish-rack and tray omitted; a Fig. '2 is a vertical central section in a plane extending from the front to the back of the machine, parts thereof being shown broken away;

Fig. 3 is a horizontal section on the line wac of Fig. 2;

Fig. 4' is a detail view in section on the line y-y of'Fig. 3 showing .the construction of the overflow and drain tube and its actuating mechanism;

Fig. 5 is a detail view in section on the line zz of Fig. 3 showing the valve controlled water supply'inlet;

Fig. 6 is a detail view showing a cross section of a slat, supporting pin and cross rod used in the construction of the dishrack; i

Fig. 7 is a perspective view of the agi tator;

Fig. 8 is a perspective view of the dish-- rack; and h V Fig. 9 is a similar view of the dish-tray.

Similar characters of reference indicate corresponding parts tthroughout the several views and having reference now to the same:

'1 is a batin having an upwardly extending flange 2 around its top, and a depression 3 formed in its bottom. In the front of the basin is a chute 4 formed for the reception of fluid. At each corner of the basin upon theexterior thereof is a threaded lug 5 into which is secured a leg 6 formed of a suitable length of pipe upon which the basin is supported.

Upon the basin is secured a housing 7, its lower edges fitting within the flange 2 of the basin and being secured thereto in any suit able manner. The open front of the houser may rest upon the top 11 of lllltl triangular -inform and the top is of correspondin depth so that when the housing is close it presents a cubical appearance. The closure member has a' projecting 'lip 13 along its top 'and sides that extends is adapted to receive liquid that may csserves as a fan-chamber.

' and the cape from between the housing and'its closure member and direct its return toward the basin. In thelower part of the housing 1s arranged a removable grid 17 which is supported atits edges upon an angle-iron frame 18 that is attached to the walls of the housing, there being a space 19 between the basin and the grid within the housing which Along the front of-the frame 18 is secured in a plane parallel with the front 16 t ereof, there bein ont for the passage ofv liquid from the, lip 14, and the interior of th closure 8, in its return to the basin.

removable tray 23, the ledge being located Within the washing chamber 21' of. the ousmg, is a ledge 22 for the support of a so that the tray'will be held a suitable disthrough the tance above the dish-rack 24 which rests upon the grid 17. i q

A water supply pipe "25 extends tightly bottom of the basin 1 and has upon its upper end a return joint 26 for. directing the inflow of water from' the pipe downwardly as it enters the basin, and the for controlling the supply of water there-; to. The basin has also a drain-pipe 28 the upper end of which is flush with'itsdepress1on 3 and has an internal annular flange 29 at'i ts top which acts as a valvp seat. A drain tube 30 WhlOh is open throu hout its length extends movably through -t e flange into the drain-pipe and has at its lower end an-external flange 31 upon which rests a leather'washer 32-that'bears against the lower faceof the flange 29 when the tube 1s .m its uppermost position and" acts as i of liquid or a pendant apron 4 16' that extends within the housin .ing bearing 42 that a space 20 between the apron pipe has also a valve.27 beneath thebasin outlet for excess li 'uid pivoted bell-crank 33 which has connection with the tube at its lower end by means of a rod 34 that extends through the tube, there being also an operating rod 35 attached to the bell-crank, that extends .7

through the front of the honsin with a knob 36 on its projecting end. E-te'nsion spring 37 is secured atone end to an anchor in 38 on the basin and has connection at 1ts other end with a pin 39 on a bell-cra'nk 7 which is located thereon at a point to one side of the pivotal support 40 of the latter,opposite the anchor pin, and the spring so arranged that its line of tension lies 111 a plane above the center of the pivotal support when the tube is at its up ermost position and below that center w en the tube is at its lowermost position. Thus, the tube is held'inert in either of its opposite positions according to which it is adusted.

Attached to the under side'of the basin is an electric motor 41 which has an extendrojects upwardly through the basin into tii which the motor shaft 43rotates. The motor is located beneath, the depression 3 and the bearing 42* fits tightly in the opening in the basin through which it extends so that leakage of liquid from the basin onto 2 the motor is avoided. Upor'rthe upper end bf the motor shaft 43 is secured an agitator comprised of 'two distinct members, viz: a fan 44 and an impeller 45, the latter being 'clamped'in place between the hub 46 of the fan and a block 47, there being a number of rivets 48 which rigidly secure the parts together. An axial opening 49 extends through the a itator for the reception of the motor shaft.

culation of the atmosphere in the housing when rotated, and is located in the fancharfiber in' a plane suitably distant above the overflow level of liquid in the basin. 110

The impeller 45 is comprised of pendant blades 50 arranged respectively on o posite sides of the axis of rotation and wit their lower extremities extending-below the overflow level of 1i uid in the basin and into the depression t erein. The rear edge of each blade has an outwardly curved lip 51, slantinglydisposed so that as the agitator is rotated the liquid in the basin that is.

engaged by the impeller will become thrown rapidly circulating air wit in the housing.

conduiti52 having a switch 53 at one endand a terminal-box 54" at the other is secured beneath the basin and servesito shelter the electrical conductors (not shown) e fan-chamber, in

The fan may be of any 105 suitable form adapted to cause a rapid clrthe motor. The switch 53, water eupslats from tiltin the dishes placed retreat ly projecting posts 57, the slats being spacedapart to admit upward and downward passageof. fluid therebetween. Also a series a of cross rods 55% extend from one side of the frame through the slats 56 to the opposite side thereof Which serve to hold the and prevent articles contained 'in the fac from falling between the slats. The posts serve to prop dishes and similar articles in an edgewise osition so that they do not unnecessarily o struct the circulation of fluid in its passage into and from the washing chamber.

The trayl 23-is comprised of a rectangular frame 59 aving opposite hand-holds 60 in its sides and ends, and within the frame are secured vertical partitions 61 that are s aced apart and extend from oneend of t e frame to the other. Between each partition and the adjacent side of the frame and also between said partitions are secured corresponding screens 62 slantingly disposedv and adapted to support thereupon articles of various kinds to be washed. The

dish-rack and the tray are each made with similar length, and breadth so that they may be inserted into the washing chamber lengthwise or sidewise as desired. Both the rack and the tray are constructed ,soas to admit of the upward and downward passage of fluid therethrough with no more vhindrance than is necessarily occasioned by the supports for the articles placed therein; The grid serves as a guard for the fan as wel as a support for the dish-rack.

' The machine herein disclosedin detail is merely an example ofthe invention as applledto domestic or household use, and this maybe modified in the construction and arrangement of its various parts without departure from the spirit of the invention.

The invention is also applicablefor various and more pretentious washing and drying operations, such as arerc uired in restaurants, hostelries, soda an ice-cream dispensaries, etc, in which instances suitable modifications of the example disclosed may readily be madeby the skilled mechanicia-n to suit the. invention to needs peculiar to the ents. a

Tn operag the invention the rack is placed in the housin upon the grid with my ongst the ts, d the tray is and upon me ledge 22 with articles to' be washed laid upon the slanting screens 62 in tilted positions sothat liquid willreadily drain from any concavities they may have. Such articles as spoons, cups, tumblers, glasses and other hollow articles are placed in the tray or in the rack in such positions as to preclude their retaining liquid. The washing chamber is then closed by turning the closure member downwardly. Steaming hot water is then introduced into the basin through th valve 27 which is intended .for connection with a suitable source of steam or hot water, 0r, water may be heated in a vessel (not shown) apart from the machine and introduced into the basin through its chute 4. The water is retained in the basin by the tube 30 which is adjusted to its uppermost position by pushing the rod 35 inwardly. Should the water supplied to the basin rise to a level above the top of the tube, the excess overflows therethrough into the drain-pipe. The motor is then set in motion by turning the switch and, theagitator thereupon revolves rapidly causing the atmosphere within 4 the fanchamber to move forcefully upward through the grid, rack and tray, and amongst the articles contained in the washing chamber. A corresponding downward movement of air from the washing chamber into the fan chamber is occasioned by the rising flow,

and because of the suction of the fan. The

liquid in the basin israised, bythe action of the impeller, in sprays, into the suction area in the fan-chamber and is drawn up therefrom together with the contained an and forced b-y the action of the fan through the grid into the washing chamber and amongst the articles contained in the rack and tray with cleansing effect. Thus, the contained articles ar'e'subjected to the abrasive action of the heated and forcefully circulated wet air. Soap or substances of similar nature may be utilized in the washing process by placing such substances exposed within the housing or basin so that the washing fluid becomes charged therewith. When the washing process above described has progressed sufficiently to insure.

thorough cleansing of the articles, the tube 30 is adjusted to its lowermost position by pulling out the operating rod 35 so that "the liquid content of the housing and basin will gravitate through. the tube into the drain-pipe. The tube is then readjusted to its former position and the basin is charged with clear hot water, which resultsih a thorough rinsing of the articles previously washed, after which the tube is returned to its lowermost position. and the rinsing liquid expelled as in the former instance.

The articlesthus treated to the washing andrinsing operations are then dried by subjecting them while hot, to a a a of air tacifrom the fan while the closure member isi'aised to open position.

/ is carried with the contained air t at 'is' rapidly circulated Within the housing by the During the foregoing washing and rinsing operations the liquid raised by the impeller is broken into fine spray by the fan which rotatesat an exceedingly high velocit and action of the fan. Thus, the cleansing agent is forcefully a plied uniformly to the entire surfaces of/ t e articles contained in the rack and tray without disturbing their 081- tions so that breakage is thereby avoided. What I claim is)- I 1. I11 a dish washer,a housing having a washing chamber and also means at its base adapted to contain liquid; a fan operable above the level of liquid for causing circulation of the. air within the housing; and means for raising the liquid into the air thus circulated.

2. In a dish washer, a housing including means at its base for holding 1i uid, a fan operable above the level of liquid therein; and an impeller extending into the liquid adapted to force it into the suction area of the fan.

3. In a dish washer, a housing for inclosing articles therein to be washed and having means in its base ada ted to contain a quantity of washing flui means for creating rapid circulation of air within the housfluid into the circulated air.

4. In. a dish washer having a housirfg for ing; and. means for infusing the contained enclosing articles therein to be washed and horizontally disposed being adapted to contain in its base a limited quantity of liquid, means for raisin particles of the liquid into the contain air; and means for breaking the liquid thus raised into finespray and for creatlng rapid circulation of the contained air. i

5. In apparatus of the class described includin a be was ed therein having means atits base for containing a'limite d quantity of liquid, and a closure member at its upper part, a grid arranged in the housing separating the housing into a wash-.. ing chamber and a fan-chamber; meansfor osition an a ron extendi therein dividing the housing into ousing for enclosing articles to within the fan-chamber for causing circula tion of air between the fan-chamber and washing chamber through the grid; and means or raising particles of the contained liquid into the air thus circulated.

6. In apparatus of the class described, a housing havin an open forward part that recedes from its front toward its top and is provided with a projecting li extending along the sides and bottom of t e openin a horizontal frame arranged within t e housing at a point approximately at the bottom of the opening; a grid removably positioned in the frame separatin the lower from the upper portion of the ousing; a hollow closure member hinged to the top of the housing, its sides and lower front edge extending within the lip when in closed from the front of the frame downwardlya jacent the front of the housin there bem a space between the apron and passage of liquid from the lip and the closure member; and means to spray water in the upper portion of the housing.

7. In a washing machine having a housing with an opening therein an closure therefor and also means at its base for conhorizontally disposed within the ousing approximately at the bottom of the opening twochambers; a removable dish-rack supported by the grid and being so constructed as to admit upward and downward assage therethrough of fluid; and an agltator contained within the chamber beneath thegrid adapted to cause rapid air circulation between the chambers through the grid and rack and to infuse the contained liquid into the air thus circulated;

ture, in presence of two'witnesses.

, WALTER e. BURNS.

Witnesses:

MAn'LnA Ma'rrum, CLEM NT J. Mnmm- In testimony whereof I afiix "my' signathe front or the downward

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